Brake-shoe.



A. NELSON.

BRAKE SHOE.

APPLICATION FILED ocT. 5, 1915.

Patented Sept. 26, 1916.

ATTORNEYS OFFICE.

f ALBERT NELSON, or cnrcaeo, rumors, ASSIGNOB 'ro AMERICAN BRAKE snon &

FOUNDBY COMPANY, F MAHWAH, NEW JERSEY, A CORPORATION 0]? EW JERSEY.

v mans-snot.

1,199,101. specification Letters Patent Patented Sept. 26, 1916.

A, Application filed October 5, 1915. Serial No. 54,116. I

To all whom) it may concern Be it known that I, ALBERT Nansen, a citizenof the United States, and a resident of Chicago, in the county of Cookand State 'of Illinois, have made and invented certain new and usefulImprovements in Braketion.

Shoes, of which the following is a specifica- My invention relates toreinforcing hacks for brake shoes, and concerns in particular theconstruction of the attaching lug, and its mode of securement andanchorage to the back proper.

It is anob ject of my invention to provide =a separate attaching lugwhich is 'so formed and constructed, that the reinf rcing cast metal,which ordinarily extends p from the body of the shoe and around the lugso as to reinforce and supplement the same, is rendered unnecessary andis omitted, whereby a material savin of cast metal is efiected and theweight 0 the shoefwhen scrapped, is materially reduced.

, A further object is to provide a brakeshoe back having a separatelyformed boxshaped lug of such configuration and arrangement as to preventits becoming broken or crushed, either during transportation or while inservice.

A further object is to provide an improved 'securement and anchoragebetween the lug and the back, whereby. the lug is securely .held in thedirection of the length ofthe back.

1 Other objects and advantages will appear as the description proceeds,it being understood that changes in the precise embodiment of myinvention can be made within the scope of what is claimed, withoutdeparting from the spirit thereof.

The preferred embodiment of my invention is disclosed in theaccompanying drawof clearness, illustrating the same unaccom panled bythe reinforcing back.

Referring specifically to the several views,

the separately formed attaching lug is stamped from a single blank,illustrated in its preferred embodiment in- Fig. 4, which blank includesthe top portion12, attaching end wall portions-13, and the side portions14, the latter being enlarged toward their outer extremities andprovided with confronting U-shaped slits 15 therein. By the action ofsuitable dies, the blank is bent into the boxshaped lug, illustrated inFig. 5, which includes the attaching end walls 13', the side walls 1%and the top 12. The end walls, which, in common with the side Walls, areformed as a part of the top,-project down between the said side Wallsand brace and hold them against crushing and distortion. The

side walls, and the extremities thereof are bent beneath and against thereinforcing back plate, thus securely anchoring the lug thereto. Thelug, as thus constructed, may be used with the ordinary type of steelreinforcingback. The special form of back illustrated in the drawings,is provided with and contains T-shaped slits v(not shown) at its sides,the resulting flaps 11 being bent outwardly and above the plane of theback,

to thus form anchoring and holding flanges;

The formation of the holding flanges reduces the width of the centralportion of the back to the required amount, and this reduced portion ispreferably crimped in an outward direction, so that the extremities ofthe end Walls of the lug,'which are bent therebeneath, are disposed inor above the general plane of the back. The lower extremities of thesides 14 'rest upon the re inforcing back 10 and receive therebetween,and contact with, the holding flanges 11, which in this form ofconstruction, extend betwe n the side and end walls of the lug,

.Whereoy the lug is securely anchored against movement in the directionof the length of the back. I The reinforcing back and attaching lug jare placed Within a suitable mold, and the 5, wearing body 18 is castthereon, the molten 10 inforc'ing" back'rrenders unnecessaryadditional-securing,means for holding the two together,1,The'l";foregoingteffects a material "saving infmetallover the usualform of ke slioe, ",wherein the cast metal, of necessitjfli flows uandar'ound the attaching lug to/siipplernenijthe; same and to strengthen'tne-jsec eme'nt ,between the lug and the brake sli'oe back".The inwardturning of thetongu'e l7j pi'esent's a smooth bearing for ,24)'-the"shoe attaching key, and also brings the topjwall of the key opthe Standard distance fronifth'e top of the lug, without the use ofexcessively heavy metal in the construction of the lug itself.

What I claim is 1. A brake shoe lug, comprising connected sides and top,attaching arms connected to said top projecting between said sides andwith the ends thereof being bent to engage a brake shoe back, said sidesprovided with U-shaped slits therein defining tongues connected to thetop of said lug, said tongues being bent inward beneath and into contactwith the lower surface of said top.

2. An article of the class described com- ,prisig a reinforcing backwith upstanding 'iiolding flanges adjacent the central portion thereof,an attaching lug including a top and sides, ,the said sides contactingwith and reinforced by said holding flanges, at-

taching arms carried by said top projecting between said holding flangesand engaging the under surface of said reinforcing back, said sidesprovided with key openings therein.

3. A brake shoe comprising a reinforcing back with outstanding holdingflanges .adjacent the central portion thereof, an attachingIugformedwith a top and spaced sides, with the sides thereof contactingwith the said holding flanges, said sides pro-- vided with U-shapedslits therein, and with the resulting tongues being bent into contactwith the inner surface of said top, at-

taching arms conneeted to said. top, contacting with saidholdingflangesand anchored to said ba'ck,an d a wearing bodyfanchored tosaid back.

4. A brake shoe comprising a reinforcing back with a reduced andoutwardly crimped central portion, outstanding holding flangesface ofthe crimped portion of said back;

and disposed above the lower surface of said back, and a wearing bodyanchored to said reinforcing back.

5. A box-shaped brake shoe lug comprising a top, side walls carriedthereby and provided with key openings therein, end walls connected tosaid top and projecting between said side walls, and means carried bysaid walls adapted to engage a brake shoe back and anchor the lugthereto.

6. A brake shoe lug comprising a top, overlapping end and side wallscarried thereby, said si'le walls provided with keyopenings therein,andsaid end walls projecting beneath said side walls and adapted toengage a brake shoe back and anchor the said lug thereto.

7. A box-shaped brake shoe lug consisting of connected top, end and sidewalls, said side walls projecting between and beyond said end walls andprovided with key openings therein, and attaching means carried by saidwalls. l

8. A reinforcing back for brake shoes, a

lug anchored thereto and consisting of a top, end and side wallsconnected to said top, with the side walls provided with key openingstherein and projecting between said end walls, attaching means carriedby said ALBERT Manson. WVitnesses W. C. Cmrrs, S. D. lVlrnowskr.

Copies 0! this patent may be obtained for nve cents each, by addressingCommissioner 01. Patents,

Washington, D. C.

